1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <rtc.h>
9*4882a593Smuzhiyun #include <spi.h>
10*4882a593Smuzhiyun #include <power/pmic.h>
11*4882a593Smuzhiyun #include <fsl_pmic.h>
12*4882a593Smuzhiyun
rtc_get(struct rtc_time * rtc)13*4882a593Smuzhiyun int rtc_get(struct rtc_time *rtc)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun u32 day1, day2, time;
16*4882a593Smuzhiyun int tim, i = 0;
17*4882a593Smuzhiyun struct pmic *p = pmic_get("FSL_PMIC");
18*4882a593Smuzhiyun int ret;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun if (!p)
21*4882a593Smuzhiyun return -1;
22*4882a593Smuzhiyun do {
23*4882a593Smuzhiyun ret = pmic_reg_read(p, REG_RTC_DAY, &day1);
24*4882a593Smuzhiyun if (ret < 0)
25*4882a593Smuzhiyun return -1;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun ret = pmic_reg_read(p, REG_RTC_TIME, &time);
28*4882a593Smuzhiyun if (ret < 0)
29*4882a593Smuzhiyun return -1;
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun ret = pmic_reg_read(p, REG_RTC_DAY, &day2);
32*4882a593Smuzhiyun if (ret < 0)
33*4882a593Smuzhiyun return -1;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun } while (day1 != day2 && i++ < 3);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun tim = day1 * 86400 + time;
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun rtc_to_tm(tim, rtc);
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun rtc->tm_yday = 0;
42*4882a593Smuzhiyun rtc->tm_isdst = 0;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun return 0;
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
rtc_set(struct rtc_time * rtc)47*4882a593Smuzhiyun int rtc_set(struct rtc_time *rtc)
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun u32 time, day;
50*4882a593Smuzhiyun struct pmic *p = pmic_get("FSL_PMIC");
51*4882a593Smuzhiyun if (!p)
52*4882a593Smuzhiyun return -1;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun time = rtc_mktime(rtc);
55*4882a593Smuzhiyun day = time / 86400;
56*4882a593Smuzhiyun time %= 86400;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun pmic_reg_write(p, REG_RTC_DAY, day);
59*4882a593Smuzhiyun pmic_reg_write(p, REG_RTC_TIME, time);
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun return 0;
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
rtc_reset(void)64*4882a593Smuzhiyun void rtc_reset(void)
65*4882a593Smuzhiyun {
66*4882a593Smuzhiyun }
67